Milking machinery.



O. R.v MITCHELL. MILKING MACHINERY.

APPLICATION FILED AUG. 31, 1910.

Patented Feb. 27, 1912.

2 SHEETS-:SHEET 1.

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0. R. MITCHELL MILKING MACHINERY. APPLIUA'I'IOI} FILED AUG. 31, 1910.

' Patented Feb. 27, 1912.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

CHARLES ROBERT MITCHELL, or GHATSW 001), NEW scum WALES, AUsrRAmMILKING- MACHINERXI,

Specification of Letters Patent.

Patented Feb. 2'7, 1912.

Application filed August 31, 1910. Serial No. 579,905.

' bered teat cup while vacuum and atmosnously or in other words' thewhole of the teat cups are pulsated together resulting in a more or lessviolent drain upon all the teats of the cow at the same time in a moreor less mechanical manner.

Now this invention has been specially devised to substitute for thismore or less mechanical process a process whereby there is a pressureonly upon some of the teats of the cow while at the same time the otherteats are relieved from pressure and so resulting in the withdrawal ofmilk only from the former teats, while the latter are replenishing.

The improvement in milk1ng processes according to this inventionconsists then in subjecting some or the half of the teats of a cow topressure while the others or the other half of them are allowed todilate and so on alternately for the purpose of withdrawing m'lk fromthe former while the latter are re lenishing and the improvements inmilking machinery consist in a novel construction of teat cup clusterand the combinations thereof with a pulsator.

In carrying this invention into cited; the base of the teat cups or theinfiater' thereof placed on the teat of the cow are connected by meansof a novel construction of cluster and flexible connection to the milkreceiver or vacuum piping.

In carrying this invent-ion into effect a receiving vessel or vessels,suction pipings, double acting pulsators and two chambered teat cups asusual are employed and each cluster has a receiving passage for the milkin communication with the receiving vessel and with the internal chamberof the teat also as ordinarily, but in addition each cluster has twoseparate and independent pulsation passageseach connected independentlyto one end of the double acting pulsa- .tor and to the outer chamber orinflater spaces of two of the series of four teat cups of said cluster.Now the teat cups being applied to the teats of a cow with say the twocups having the infiater space connec-v tions to the one pulsationpassage connected to one end of the pulsator on the tea-ts of the forequarters of the udder, and the two cups having the infl'ater spa'ceconnections to the other pulsation passage connected to the other end ofthe pulsator, and suction being set up in the teat cups and in thepulsator, milk will be drawn from. one of the two sets of teats whilethe other setis allowed to dilate. In order however to illustrate howbest this invention may be carried into practical efi'ect the same willnow be described with reference to the drawings accompanying. andforming part of this complete specification in which Figure 1 is adiagrammatic view of the teat cups the clusterthe pulsator and thereceiving vessel showing the connections necessary in the milkingprocess according to this invention. And Fig. 2 is a perspective view ofthe t improved cluster used therein with Figs. 3 and 4 as diagrammaticsectional views of parts thereof.

' The parts used and now to be further de scribed are adapted to beapplied to any machinery which will give the desired suction andpulsations" but are preferably adapted to be utilized in connection withchamber 9 with flexiblewalls 10 and rigid casing 11 with flexiblesuction connections 12 and 13 to the end 14: of the suction passage 15of the cluster 16 and similar connections l7 and 18 to the other end 19of said passage 15. The inflater spaces of the two teat cups 5 and (Sare joined up by flexible connections 20 and 21 respectively to thenipples 22 and 23 of the pulsation passage 2t of the pulsator 30 whilethe inflater spaces of the other two teat cups 7 and 8 are similarlyjoined up by connections 25' and 26 to the nipples 21 and 28 of theother pulsation passage 29 ofsaid pulsator 30. These passages 24 and 29are flexibly conpulsatoi' with opposite ends of the cylinder 1 l 1-1theirs-oi. The nipple 54 0t thepulsatoi' valve is connected by flexibleconnection to (The source of vacuum and the nipple 31 or" the suctionpuss-age 1am the cluster 16 is connected with the millf'receiver 32 inturn joined up to the source of vacuum.

In operation as 'thdvalve of the pulsatoc 3t) rcciprocates the inflatersof the two teat cups 5- ,and 6 expand shown and. allow the teats todilate While being connected as described with the other end of thepulsator independentlyofsaid teat cups 5 and the intlatcrsret the teatcups 7; and 8 contract and imparting squeezing; action on the teats insuch cup Withdraw the Hlllliwtllfillflon]. find these ries of: two andtwo teat cups operate thus" alternately in .i'eleasing and squeezingtl'iei'l ea ts with more natural. ef-

.tect and n beneficial result in the tualitv of mill; obtained and tothe animalr I It will be seen that having, the divided and iiule wndentpulsation passages in the cluster .and independent connections to adouble acting pulsntor or to more than one double noting pulsettn. that.any series of pre;

*ing a central'chainber and an inflates-space,

a pulsator, :1 cluster, said clusterbeing provided with a suction,passage adapted to be connected to a source of suction, connectionsbetween said suction passage and the central chambers of said teat cups,said ed and released teats might be pro ynled tor though excellentresults are at-- to 'bc connccted vit-h the teat'cups, said clusterbeing further provided. with a plurality of independent pulsationpassages;

each ot-said passages having an outlet nippie coinnuniicating therewithand adapted to be connected to a pulsator and each. of said pulsationbeing provided with an inlet nipple adapted to be connected to the teatcups.

fin milking machines, in combination a clusterprovided with a suctionpassage, an out-let nipple connnunicating therewith and adapted tobeconnected to a source of suction, four'inlet nipples communicating withsaid'passage and adapted to beconnectcd with the teat cups, said clusterbeing fui'ther provided- With two independent pulsation passages, eachof said passages having an outlet nipple communicating therewith andadapted to be connected to a pulsatoi' and each of said pulsationpassages being provided with two inlet nipples adapted to be connectedto the teat cups.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

CHARLES ROBERT MlTCHELL.

Witnesses PnnoY NEWELL, Isa EASTON.

